Absolutely! After the plan failed to derail his election, the "insurance policy" kicked in which was 1) push Sessions aside 2) implement a full court press against the POTUS, based on totally debunked allegations that THEY KNEW WERE FABRICATED BY CLINTON - of which Mueller was a big part and 3) when that failed, go after him via impeachment on (pun intended) Trumped up charges.
It most certainly did! Suggesting that the allegations in the dossier didn't exist until its publication is a fantastical argument. Regardless, it most certainly HAD something to do with Crossfire Hurricane once it was released, if not before. Besides, that leaves the Downer "tip" as the only predicate, and we know Papadopoulos has repeatedly denied that he made that statement, and the CI they sent to record him incriminating himself failed miserably as he repeatedly stated on the tapes that he was not involved in any such activity and that engaging in such behavior would be treasonous. Oops!